PEPCase‐kinase transcripts accumulate during the night, controlled by the circadian oscillator and metabolites. Nocturnal phosphorylation of PEPCase controls primary carboxylation.

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#Id: 7036

#Unit 11. Evolution and Behavior

 Alfred Russel Wallace - Who was collecting specimens in the Malay Archipelago, had independently conceived of natural selection.

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#Id: 3418

#Unit 3. Fundamental Processes

NHEJ is a backup system in yeast, but in higher cells it is the principal pathway by which breaks are repaired.

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#Id: 5095

#Unit 6. System Physiology – Plant

During the day, COP1 exits the nucleus, allowing the transcriptional activators to accumulate.

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#Id: 6287

#Unit 3. Fundamental Processes

As RNA polymerase moves along the DNA template, it unwinds the duplex at the front of the bubble (the unwinding point), and the DNA  automatically reforms the double helix at the back (the rewinding point).  The length of thetranscription bubble is 12 to 14 bp, but the length of the RNA–DNA hybrid within the bubble is only 8 to 9 bp. As the enzyme moves along the template, the DNA duplex reforms, and the RNA is displaced as a free polynucleotide chain The last 14 ribonucleotides in the growing RNA are complexed with the DNA and/or the enzyme at any given moment.

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#Id: 1326

#Unit 4. Cell Communication and Cell Signaling

GS, GPK, and GP are counteracted by a phosphatase called phosphoprotein phosphatase.